EUURA OBLITA GROUP
Euura acutiserra - Sharp Leaf-galler
Pontania acutiserra Lindqvist, 1949
Phyllocolpa acutiserra (Lindqvist, 1949)
There are two records from Scotland, for both of which the original specimens should ideally be re-examined, if possible. Benson (1958) refers to one from Rhum which 'emerged from gall of P. ?pedunculi'; this seems somewhat illogical and the original specimen should be re-checked (presumably in Benson's collection at the British Museum of Natural History). A 1981 specimen from Whitlaw Mosses (Roxburghshire) was collected by Andrew Liston and is probably in the National Museum of Scotland collection. Whilst both specimens were identified by extremely experienced individuals, the fact remains that neither of these locations is known to support either of the currently recognised foodplants, Salix lapponum or S. lanata (Musgrove, 2024).
Males are rare. See Liston et al (2017) for determination.
Larvae feed on Downy Willow and Woolly Willow, which are plants of upland areas. The larvae cause a leaf fold, either spirally twisted or a marginal fold.
Jump to other group oblita species
Size: Female: 3.7 - 4mm, male:3.6 - 4mm
GB IUCN Status: Data Deficient
GB Rarity Status: Nationally Rare
Distribution: Scotland
Flight period: Uni- or bivoltine
Plant associations: Salix lapponum (Downy Willow) and Salix lanata (Woolly Willow)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
-
- We are currently looking for images of this species. Please contact the webmaster if you can assist.
References:
Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London
Liston, A.D., Heibo, E., Prous, M., Vårdal, H., Nyman, T. and Vikberg, V., 2017. North European gall-inducing Euura sawflies (Hymenoptera, Tenthredinidae, Nematinae). Zootaxa, 4302(1), pp.1-115.
Liston A, Knight G, Sheppard D, Broad G, Livermore L (2014) Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168. https://doi.org/10.3897/BDJ.2.e1168
Musgrove, A.J. 2024. A review of the status of sawflies of Great Britain - Phase 3: The Tenthredinidae (subfamily Nematinae). Natural England, unpublished